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// file : build2/test/script/regex -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD2_TEST_SCRIPT_REGEX
#define BUILD2_TEST_SCRIPT_REGEX
#include <regex>
#include <build2/types>
#include <build2/utility>
namespace build2
{
namespace test
{
namespace script
{
// @@ How can we get the position the first line_char in the output that
// did not match, for diagnostics? Failed that it will be very hard
// to debug match failures.
//
using char_string = std::basic_string<char>;
using char_regex = std::basic_regex<char>;
// Newlines are line separators and are not part of the line:
//
// line<newline>line<newline>
//
// Specifically, this means that a customary trailing newline creates a
// trailing blank line.
//
// Special characters should only be compared to special. All others
// can inter-compare (though there cannot be regex characters in the
// output, only in line_regex).
//
enum class line_type
{
blank,
special,
literal,
regex
};
struct line_char
{
line_type type;
union
{ // Uninitialized if type is blank.
char special; // [()|*+?{\}0123456789,=!] (excluding []).
char_string literal;
char_regex regex;
};
};
// Note: line_string is not NUL-terminated.
//
using line_string = vector<line_char>;
class line_regex: public std::basic_regex<line_char>
{
public:
using base_type = std::basic_regex<line_char>;
using base_type::base_type;
explicit
line_regex (const line_string&);
};
}
}
}
#endif // BUILD2_TEST_SCRIPT_REGEX
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